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Wasn't clear enough then, insulation jacket on a conventional electric WH only. Afaic, not so efficient on gas fired, cant prevent heat loss through chimney to outside.
SO the issue becomes, does restoring power to the new WH after bringing it back from off for 8-10 hours cost more than maintaining 120f? I would think not, that would be the useage scenerio for the compressor heater
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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